KR100241418B1 - Erase Recording Method for Magneto-optical Discs - Google Patents
Erase Recording Method for Magneto-optical Discs Download PDFInfo
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- KR100241418B1 KR100241418B1 KR1019920013503A KR920013503A KR100241418B1 KR 100241418 B1 KR100241418 B1 KR 100241418B1 KR 1019920013503 A KR1019920013503 A KR 1019920013503A KR 920013503 A KR920013503 A KR 920013503A KR 100241418 B1 KR100241418 B1 KR 100241418B1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10517—Overwriting or erasing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10504—Recording
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/10—Control of operating function, e.g. switching from recording to reproducing by sensing presence or absence of record in accessible stored position or on turntable
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2525—Magneto-optical [MO] discs
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- Optical Recording Or Reproduction (AREA)
Abstract
본 발명은 광자기 디스크의 소거기록방법에 관한 것으로, 종래에는 중첩기록방식이 개발중일뿐아니라 소거기록방식도 소거---〉 소거확인 ---〉기록---〉 기록확인의 순서를 수행함으로써 기록속도가 늦어 시스템 효율이 저하되는 문제점이 있었다. 이러한 문제점을 감안하여 본 발명에서는 디스크 삽입시 디스크 기록 상태를 확인하여 휴지시간이 설정시간 이상이 되면 소거 부분을 확인한 후 설정된 소거 용량 만큼 소거함으로써 기록 명령시 기록시간을 단축시켜 시스템의 효율을 항상시킬 수 있다.The present invention relates to a method of erasing recording of a magneto-optical disk, and in the related art, not only the superimposed recording method is under development, but also the erasing recording method is erased ---> erasing confirmation ---> recording ---> recording confirmation procedure As a result, there is a problem that the recording speed is lowered and the system efficiency is lowered. In view of the above problems, the present invention checks the disc recording state when the disc is inserted, and when the idle time reaches the set time or more, the erase portion is checked and then erased by the set erase capacity. Can be.
Description
첨부한 도면은 광자기 디스크의 소거기록시 신호 흐름도이다.The accompanying drawings are a flow chart of an eraser proxy signal of a magneto-optical disk.
본 발명은 광자기 디스크의 정보기록에 관한 것으로 특히, 광자기 디스크에서 정보를 기록할 때 중첩 기록(OVERWRITE)방식을 사용하지 않고 소거기록 방식에서 시스템의 휴지시간을 이용하여 기록 속도를 항상시키는 광자기 디스크의 소거기록 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the recording of information on a magneto-optical disk, and more particularly, to an optical recording that always uses the system's downtime in the erasure recording method without using the OVERWRITE method when recording information on the magneto-optical disk. A method of erasing and recording a magnetic disk.
일반적으로 광자기 디스크(Magneto-Optic Disc)는 그 기록밀도가 일반 자기디스크 및 광학 디스크 예를 들어, CD-R, CD-RW, DVD-ROM보다 뛰어나다는 장점이 있어 최근 그 사용이 급격하게 증가하고 있다.In general, magneto-optic discs have an advantage that their recording density is superior to that of general magnetic disks and optical disks such as CD-R, CD-RW, and DVD-ROM. Doing.
이러한 광자기 디스크의 기록 기술은 이미 널리 알려져 있으며 그 기록원리는 기록막의 자화방향과 반대방향으로 외부에서 약한 자계를 가한 상태에서 온.오프로 표현되는 기록신호에 따른 레이저빔(Laser Beam)을 기록막에 주사하면 레이저빔이 주사된 부분이 광에너지에 의해 보상 온도(Compensation Temp)이상으로 가열된 다음 냉각 과정에서 외부 자계 방향으로 자화가 발생되어 정보가 기록된다. 즉, 기록막의 특정부위를 가열, 냉각함에 따라 신호가 기록된다.The recording technology of such a magneto-optical disk is well known and the recording principle is to record a laser beam according to a recording signal expressed as on or off in a state in which a weak magnetic field is applied in the opposite direction to the magnetization direction of the recording film. When scanning the film, the portion where the laser beam is scanned is heated above the compensation temperature (Compensation Temp) by the light energy, and then magnetization is generated in the direction of the external magnetic field during the cooling process to record the information. That is, a signal is recorded by heating and cooling a specific portion of the recording film.
이와같은 기록방식은 아직 사용하지 않은 디스크(Virgin Disc)의 경우이며 통상적인 디스크의 정보기록은 이미 기록된 부분중에서 소거하여도 무방한 부위에 기록한다. 즉, 이미 기록된 신호 위에 직접 신규의 신호를 기록함으로써 정보를 기록하는 중첩기록과 기록된 신호를 소거한 후 정보를 기록하는 소거기록이 있는데, 상기 소거기록은 소거 ---〉 소거확인 ---〉 기록 ---〉 기록확인의 순서로 수행되며 소거 확인시 완전소거가 되지 않은 경우 재소거 및 소거확인을 한다. 또한, 중첩기록은 정보를 직접 기록한 후 기록확인을 수행하는 방식으로써 기록시간이 중첩 기록에 비해 1/3이상 감소한다.Such a recording method is a case of a disc that has not been used yet, and information recording of a conventional disc is recorded in an area which may be erased from the already recorded part. That is, there is an overwrite recording for recording information by recording a new signal directly on the already recorded signal and an erase record for erasing the recorded signal and then erasing the recorded signal. -> Record ---> It is executed in the order of record check and if erasure is not completed, re-erasure and erase check. In addition, the superimposition recording is a method of recording verification after directly recording information, and the recording time is reduced by 1/3 or more compared with the superimposition recording.
그리고, 광자기 디스크에 기록된 신호를 읽을 경우 수직으로 자화된 기록막에 레이저 빔(Laser Beam)을 주사하면 기록막의 자화량에 비례하여 반사 또는 투과되는 빛의 편광면 회전을 이용함으로써 기록된 정보를 읽는다. 즉, 한방향으로 모두 자화된 기록막의 일부를 반대 방향으로 향하게 하여 신호를 기록한 후 재생용 레이저 빔을 주사하면 기록부분에서의 반사 또는 투과량에 따른 편광면(Polarization)의 크기 및 방향이 변화되고 이 변화를 검지함으로써 기록신호를 읽는다.In addition, when reading a signal recorded on a magneto-optical disk, when a laser beam is scanned on a recording magnet which is vertically magnetized, information recorded by using rotation of a polarization plane of light reflected or transmitted in proportion to the amount of magnetization of the recording film Read That is, when a part of the recording film magnetized in one direction is directed in the opposite direction and the signal is recorded and then the laser beam for reproduction is scanned, the size and direction of the polarization according to the reflection or transmission amount in the recording portion are changed and the change is made. The reading signal is read by detecting.
현재 상용화된 광자기 디스크 및 그 장치는 소거기록방법을 채용하고 있으며 중첩 기록을 위한 디스크 및 장치는 아직 개발중에 있다. 즉, 현재 보편화된 기술은 중첩 기록이 상용화 수준에 도달하지 못했으며 광자기 디스크의 호환성 확보를 위한 국제규격(ISO/0089)은 중첩기록(overwrite)이 불가능한 광자기 디스크의 규격을 채택하여 이 규격을 만족하는 성능의 디스크 및 장치의 상용화가 진행중이다.Currently, commercially available magneto-optical discs and their devices employ the erasure recording method, and discs and devices for superimposed recording are still under development. In other words, the current universal technology has not reached the level of commercialization of superimposed recording, and the international standard for ensuring the compatibility of magneto-optical disks (ISO / 0089) adopts the specification of the magneto-optical disk which cannot be overwritten. Commercialization of disks and devices with satisfactory performance is underway.
또한, 광자기 디스크는 고기록밀도를 가지고 있으나 기록재생속도 특히, 기록속도가 낮은 단점이 있다. 즉, 기존의 하드 디스크에 비하여 기록속도가 3배이상 낮으며 사용 범위의 확대를 위해서는 기록속도를 더 올려야 하는 기술적 과제가 남아 있을뿐아니라 이러한 기술적 과제를 위한 중첩 기록 기술에 적합한 기록층 및 장치를 개선되어야 하는 문제점이 있었다.In addition, the magneto-optical disk has a high recording density but has a disadvantage in that the recording and reproducing speed, in particular, the recording speed is low. That is, the recording speed is more than three times lower than that of a conventional hard disk, and the technical problem of increasing the recording speed in order to expand the range of use remains, as well as a recording layer and a device suitable for the overlapping recording technology for such technical problem. There was a problem that must be improved.
본 발명은 이러한 문제점을 감안하여 소거기록방법에 의한 기록 속도를 향상시켜 중첩기록방법의 기록속도와 동등한 수준의 성능을 제공하는 광자기 디스크의 소거기록방법에 관한 것이다.In view of such a problem, the present invention relates to an erase recording method for an magneto-optical disc which provides a level of performance equivalent to that of the superimposed recording method by improving the recording speed by the erase recording method.
이와같은 목적의 본 발명은 컴퓨터등에 사용되는 보조기억장치들의 총 가동시간인 기록, 재생, 소거 및 휴지시간중 휴지시간이 대부분의 시간을 차지한다는 사실을 이용하여 휴지시간중에 소거할 정보를 소거, 소거 확인하고 기록시에 소거된 영역에 기록동작만을 수행함으로써 종래 소거기록방식에 비해 최소 1/3의 시간 단축이 가능하도록 하는 것으로, 본 발명의 작용 및 효과를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.The present invention for this purpose is to erase the information to be erased during the idle time by taking advantage of the fact that the idle time occupies most of the recording, reproducing, erasing and rest time which is the total operating time of the auxiliary storage device used in the computer, etc. By confirming the erasure and performing only a recording operation on the erased area at the time of recording, it is possible to shorten the time by at least 1/3 as compared with the conventional erasing recording method. The operation and effect of the present invention will be described in detail with reference to the accompanying drawings. As follows.
먼저, 사용자가 광자기 디스크 사용시 소거명령을 수행하면 디스크 전체를 소거하는 경우가 발생하여 소거시간이 길어짐에 의해 디스크 사용명령을 수행하지 못함으로 소거 용량을 설정하고 휴지시간이 일정시간을 넘으면 소거 동작을 수행토록 임의의 일정시간을 설정한다.First, when a user executes an erase command when using a magneto-optical disc, the entire disc may be erased, and the erase time may be lengthened. Therefore, the erase capacity may not be executed. Set an arbitrary time to execute.
이때, 컴퓨터에 디스크를 삽입하면 디스크의 기록 상태를 디스크의 FAT(File Alocation Table)등에서 확보된 디스크내의 기록된 정보단위인 화일(File)과 그 화일(File)을 구성하는 정보들의 위치인 섹터(Sector) 및 트랙(Track)에서 정보를 읽음과 아울러 소거될 화일(File)에 관한 정보를 확인하여 디스크기록 정보기억장치 또는 버퍼 메모리와 같은 별개의 기억장치에 저장하고 디스크 사용 명령이 입력기까지 준비상태로 대기한다.At this time, when the disc is inserted into the computer, the recording state of the disc is stored in a file (File) which is a recorded information unit in the disc secured by a FAT (File Alocation Table), etc., and a sector, which is a location of information constituting the file. In addition to reading information from the Sector and Track, it checks the information about the file to be erased and stores it in a separate storage device such as a disc record information storage device or a buffer memory, and the command to use the disc is ready until the input method. Wait with.
따라서, 디스크 사용 명령이 있으면 해당하는 명령을 수행한 후 디스크 기록 정보기억장치에 디스크 기록 상태를 저장하며 명령이 없으면 휴지시간 판별단계로 진행하여 휴지시간이 설정시간보다 큰가를 판별한다.Therefore, if there is a disk use command, after performing the corresponding command, the disk recording state is stored in the disk recording information storage device. If there is no command, the idle time determination step is progressed to determine whether the idle time is greater than the set time.
이때 휴지시간이 설정시간보다 작으면 디스크 사용 명령이 입력되기를 대기하고 휴지시간이 설정시간 보다 크면 디스크기록 정보기억장치에서 디스크의 기록 정보 중 소거에 관한 트랙(Track) 및 섹터(Sector)등의 정보를 읽어 소거할 영역이 있는지 판별하여 소거 영역이 없으면 디스크 사용 명령이 입력되기를 대기한다.At this time, if the pause time is less than the set time, it waits for input of the disk usage command. If the pause time is greater than the set time, information such as track and sector related to erasing among the record information of the disc in the disc record information storage device It reads and determines whether there is an area to erase. If there is no erase area, it waits for a disk use command to be input.
따라서, 소거할 영역이 있는지 판별하여 소거 영역이 있으면 설정된 소거 용량 만큼 소거를 수행한 후 디스크 사용 명령 대기상태로 진행하고 기록 명령이 입력되면 기록할 영역을 디스크기록 정보기억장치에서 읽은 디스크의 기록 상태에 따라 소거된 부분으로 결정하여 기록을 수행한다.Therefore, if there is an erasing area and if there is an erasing area, it erases as much as the set erase capacity, and then proceeds to the disk use command standby state, and when a recording command is input, the recording state of the disc which reads the area to be recorded from the disc recording information storage device. According to the erased portion is determined according to the recording.
그리고, 광자기 디스크를 사용하는 컴퓨터에서 휴지시간의 설정을 일정시간(1초-3분)으로 설정하고 소거 용량의 설정은 소정시간(2초-10분이내) 동안에 소거할 수 있는 정보 용량으로 한다.In the computer using the magneto-optical disk, the idle time setting is set to a predetermined time (1 second to 3 minutes), and the erase capacity is set to an information capacity that can be erased for a predetermined time (within 2 seconds to 10 minutes). .
이와같이 디스크 삽입시 기록 상태를 확인하여 저장한 후 디스크 사용 명령이 있는지 판별하고, 사용 명령이 없으면 휴지 시간을 임의의 설정 시간과 비교하여 휴지 시간이 상기 임의의 설정 시간보다 크면 소거부분이 있는지 상기 기록 상태 확인후 저장된 정보에 따라 확인하고, 미리 설정된 시간에 해당되는 소거 용량만큼 소거하게 된다.As such, when the disc is inserted, the recording state is checked and stored to determine whether there is a disc use command, and if there is no use command, the pause time is compared with a predetermined setting time. After checking the status, it is checked according to the stored information, and erased by an erase capacity corresponding to a preset time.
이때, 소거 용량 설정은 1배속 드라이브인 경우 1초당 전송률이 약 150Kbps이므로 10초동안의 소거 동작을 행할 경우 150Kbps*10초로 하여 1.5Mbyte에 해당하는 용량이 소거된다.In this case, the erase capacity is set at 150Kbps per second in the case of the 1x drive, so if the erase operation is performed for 10 seconds, the capacity corresponding to 1.5Mbyte is erased at 150Kbps * 10 seconds.
만일, 2배속, 4배속인 경우라면 상기 소거 용량의 2배, 4배로 계산하면 된다.In the case of 2x and 4x speeds, it is calculated as 2 times and 4 times the erase capacity.
상기에서 상세히 설명하면 본 발명 광자기 디스크의 소거 기록 방법은 광자기 디스크 사용시 휴지시간을 일정시간으로 설정하여 수행 명령이 없는 휴지시간동안 디스크의 소거부분을 소거함으로써 기록시 시간을 1/3이상으로 줄여 시스템 효율을 향상시키는 효과가 있다.In detail, the erase recording method of the magneto-optical disk of the present invention sets the pause time when the magneto-optical disk is used to a certain time, thereby erasing the erase portion of the disk during the idle time without a command to make the recording time more than 1/3. This reduces the efficiency of the system.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920013503A KR100241418B1 (en) | 1992-07-28 | 1992-07-28 | Erase Recording Method for Magneto-optical Discs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920013503A KR100241418B1 (en) | 1992-07-28 | 1992-07-28 | Erase Recording Method for Magneto-optical Discs |
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| Publication Number | Publication Date |
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| KR940002791A KR940002791A (en) | 1994-02-19 |
| KR100241418B1 true KR100241418B1 (en) | 2000-02-01 |
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| KR1019920013503A Expired - Fee Related KR100241418B1 (en) | 1992-07-28 | 1992-07-28 | Erase Recording Method for Magneto-optical Discs |
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| Country | Link |
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